A mains electricity (AC-powered) device designed to receive the electronic signals sent from a video endoscope or endoscopic video camera for the purpose of processing them. It may have additional features which compensate for/enhance the colour and light qualities provided. The picture images are sent to and shown on a visual display unit (VDU), typically to assist the endoscope operator with an ongoing intervention and often to allow the patient visualization of the process, and also the images can be recorded on a video recorder or stored on computerized media. Hard copy pictures can also be produced through the use of other devices.